CN108374755B - Overload protection device for power transmission and transformation equipment of wind farm - Google Patents
Overload protection device for power transmission and transformation equipment of wind farm Download PDFInfo
- Publication number
- CN108374755B CN108374755B CN201810245184.6A CN201810245184A CN108374755B CN 108374755 B CN108374755 B CN 108374755B CN 201810245184 A CN201810245184 A CN 201810245184A CN 108374755 B CN108374755 B CN 108374755B
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- China
- Prior art keywords
- gear box
- fixedly connected
- transmission
- generator
- sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 65
- 230000009466 transformation Effects 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Thermal Sciences (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses an overload protection device of power transmission and transformation equipment of a wind farm, which comprises a shell, wherein a variable pitch head is arranged on the left side of the shell; the beneficial effects of the invention are as follows: when the wind speed becomes large, the leftmost end of the transmission plate breaks away from the rearmost end of the limiting plate, the generator stops working, the generator load condition caused by the fact that the rotating speed of the generator is too high due to the fact that the wind speed is too large is avoided, the service lives of the generator and a speed change gear box are prolonged, when the wind speed is too large, the variable pitch head is in contact with the sleeve cover and rotates mutually to protect the variable pitch head, after the wind speed becomes small, the transmission plate and the limiting plate are embedded again due to the reset effect of the spring, the generator generates electricity again, the right end of the limiting plate is in the shape of an arc with the right side recessed right end of the limiting plate, and the transmission plate can easily enter a gap of the limiting plate under the rotating condition.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation equipment, in particular to an overload protection device of power transmission and transformation equipment of a wind power plant.
Background
Along with the increase of population in China, energy consumption is also increasing, electric energy is an indispensable energy source for daily life and industrial production, demands for electric energy are increasing day by day, people start to study a wind power plant in order to meet the demands and on the premise of not damaging the environment, the traditional wind power plant has huge power transmission and transformation volume and low wind energy utilization rate, when a platform wind occurs, power transmission and transformation equipment of the wind power plant can be burnt out and cannot work normally, and the heat dissipation capacity of the equipment is also an important problem for testing the service life of the equipment.
In the chinese patent with the publication number CN205533017U, a wind power transmission and transformation device is disclosed, which can perform power transmission and transformation supply in a wind farm, but the device has the defect that overload protection cannot be automatically performed.
Disclosure of Invention
The invention aims to provide an overload protection device for power transmission and transformation equipment of a wind farm, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a wind-powered electricity generation field power transmission and transformation equipment's overload protection device, includes the casing, the left side of casing is provided with the head of becoming oar, the outside of becoming the head of becoming evenly fixedly connected with a plurality of wind wheel blades, the right side fixedly connected with transmission shaft of head of becoming oar, the left side intermediate position of casing is opened porosely, and the downthehole fixedly is equipped with the sleeve, and telescopic left side has cup jointed the sleeve lid, and the right side of sleeve lid is connected with telescopic left side through the ball, the transmission shaft passes sleeve and sleeve lid, and the right-hand member surface of transmission shaft evenly fixedly connected with a plurality of drive plates, and the left end of drive plate is left side bellied arc shape, telescopic right side is provided with hollow cylinder, and hollow cylinder is left end open-ended shape, and the inner wall left side evenly fixedly connected with a plurality of limiting plates of hollow cylinder, the right-hand member of limiting plate is right side sunken arc and the right-hand member narrow left wide shape of limiting plate, the right side end contact of transmission shaft has the steel ball, and hollow cylinder are connected with through the spring, the right side of sleeve lid is provided with the gear box, the right side fixedly connected with the gear box and the output of the generator is connected with the input of the generator of the fixed connection phase, the generator is connected with the input end of the fixed connection phase generator of the input of the generator.
As a further scheme of the invention: the number of wind turbine blades is at least three.
As still further aspects of the invention: the left side wall body of the shell is hemispherical.
As still further aspects of the invention: the upper side and the lower side of the speed change gear box are respectively fixedly connected with a plurality of radiating pipes, the two ends of each radiating pipe are respectively communicated with a converging box, and the converging boxes on the left side and the right side are respectively communicated with two side wall bodies of the shell through an air inlet pipeline and an air outlet pipeline.
As still further aspects of the invention: the number of the limiting plates is consistent with that of the transmission plates.
Compared with the prior art, the invention has the beneficial effects that: when the wind speed becomes large, the leftmost end of the transmission plate breaks away from the rearmost end of the limiting plate, the generator stops working, the generator load condition caused by the fact that the rotating speed of the generator is too high due to the fact that the wind speed is too high is avoided, the service lives of the generator and the speed change gear box are prolonged, when the wind speed is too high, the pitch-variable head is in contact with the sleeve cover and rotates mutually to protect the pitch-variable head, after the wind speed is reduced, the transmission plate and the limiting plate are embedded again due to the reset action of the spring, the generator generates electricity again, the right end of the limiting plate is in the shape of a right-side concave arc shape and the right-side narrow-left-wide shape of the limiting plate is adopted, the transmission plate can easily enter into a gap of the limiting plate under the rotating condition, the steel balls are adopted to contact with the transmission shaft, friction energy is reduced to the greatest extent, heat of the speed change gear box is taken away after the air flows out through an air inlet pipeline, a heat dissipation pipe and an air outlet pipeline, and the service life of the speed change gear box is prolonged.
Drawings
FIG. 1 is a schematic structural diagram of an overload protection device for a wind farm power transmission and transformation apparatus;
FIG. 2 is a schematic cross-sectional view of A-A in an overload protection device for a power transmission and transformation apparatus of a wind farm;
FIG. 3 is a schematic cross-sectional view of B-B in an overload protection device for a power transmission and transformation device of a wind farm;
In the figure: 1-shell, 2-pitch head, 3-wind wheel blade, 4-transmission shaft, 5-sleeve, 6-sleeve cover, 7-ball, 8-drive plate, 9-hollow cylinder, 10-limiting plate, 11-ball, 12-spring, 13-rotating shaft, 14-speed change gear box, 15-generator, 16-cooling tube, 17-conflux box, 18-air inlet pipeline, 19-air outlet pipeline.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Referring to fig. 1-3, an overload protection device of a wind power plant power transmission and transformation device comprises a shell 1, a variable pitch head 2 is arranged on the left side of the shell 1, a plurality of wind wheel blades 3 are uniformly and fixedly connected to the outer side of the variable pitch head 2, a transmission shaft 4 is fixedly connected to the right side of the variable pitch head 2, a hole is formed in the middle position of the left side of the shell 1, a sleeve 5 is fixedly arranged in the hole, a sleeve cover 6 is sleeved on the left side of the sleeve 5, the right side of the sleeve cover 6 is connected with the left side of the sleeve 5 through balls 7, the transmission shaft 4 penetrates through the sleeve 5 and the sleeve cover 6, a plurality of transmission plates 8 are uniformly and fixedly connected to the outer surface of the right end of the transmission shaft 4, the left end of the transmission plate 8 is in a left-side protruding arc shape, a hollow cylinder 9 is arranged on the right side of the sleeve 5, the hollow cylinder 9 is in a left-side opening shape, a plurality of limit plates 10 are uniformly and fixedly connected to the left side of the inner wall of the hollow cylinder 9, the right end of the limit plate 10 is in a right narrow left-side shape, the right end of the limit plate 10 is in a right side, the right side of the limit plate is in a right-side narrow left-width shape, the right end of the sleeve 4 is connected with the sleeve cover 6 through balls 7, the right end 11 is in contact with the right end 11 of the transmission shaft 4, the hollow cylinder is fixedly connected with the hollow cylinder 13, the hollow cylinder 13 is fixedly connected with the hollow generator 13, and the hollow generator 13, the hollow generator 13 is fixedly connected with the right end 13, and the hollow generator 13 is fixedly connected with the right end, and the input end is connected with the hollow cylinder 13, and has the input end 13, and has the input, and is connected with the input, and the 13, and is;
Under the condition of normal wind speed, the variable pitch head 2 rotates to drive the transmission shaft 4 to rotate, thereby make the drive plate 8 drive limiting plate 10 and hollow cylinder 9 rotate, through the acceleration effect of change gear case 14, generator 15 generates electricity, when wind speed grow, wind wheel blade 3 drives variable pitch head 2 and rotates transmission shaft 4 can gradually move rightwards when rotating, when the extreme left end of drive plate 8 breaks away from limiting plate 10's rearmost end, transmission shaft 4 idles at this moment, can not drive hollow cylinder 9 and rotate, generator 15 stops the work at this moment, the generator load condition that causes because the wind speed is too big makes generator 15 rotational speed too fast, the life of generator 15 and change gear case 14 has been avoided, when wind speed is too big, variable pitch head 2 contacts with sleeve lid 6 and rotates each other, protect variable pitch head 2, after the wind speed diminishes, because spring 12's reset effect makes drive plate 8 and limiting plate 10 re-embedment, hollow cylinder 9 rotates again at this moment, the generator 15 generates electricity, the right-hand member of adopting limiting plate 10 is right-side sunken arc and the design of limiting plate 10's right-hand member narrow left wide shape, the transmission plate 8 can be easily adopted under the condition that the wind speed is too big makes the transmission plate 10, the transmission efficiency of the transmission shaft is contacted with the maximum steel ball, the design can be reduced, the maximum friction is realized, the transmission efficiency is reduced under the condition of the transmission plate is reduced, the transmission of the transmission plate is realized, under the condition is reduced, and the transmission is easy, the transmission is reduced.
The number of rotor blades 3 is at least three.
The left side wall of the shell 1 is hemispherical.
The upper side and the lower side of the speed change gear box 14 are respectively fixedly connected with a plurality of radiating pipes 16, two ends of each radiating pipe 16 are respectively communicated with a converging box 17, the converging boxes 17 on the left side and the right side are respectively communicated with two side walls of the shell 1 through an air inlet pipeline 18 and an air outlet pipeline 19, air flows out through the air inlet pipeline 18, the converging boxes 17, the radiating pipes 16, the converging boxes 17 and the air outlet pipeline 19, heat of the speed change gear box 14 is taken away, and the service life of the speed change gear box 14 is prolonged.
The number of the limiting plates is consistent with that of the transmission plates.
The working principle of the invention is as follows: under the condition of normal wind speed, the variable pitch head 2 rotates to drive the transmission shaft 4 to rotate, thereby the transmission plate 8 drives the limiting plate 10 and the hollow cylinder 9 to rotate, through the speed increasing function of the speed changing gear box 14, the generator 15 generates electricity, when the wind speed is increased, the wind wheel blades 3 drive the variable pitch head 2 to rotate, the transmission shaft 4 gradually moves rightwards, when the leftmost end of the transmission plate 8 is separated from the rearmost end of the limiting plate 10, the transmission shaft 4 idles at the moment, the hollow cylinder 9 cannot be driven to rotate, the generator 15 stops working at the moment, the generator load condition caused by the too high rotating speed of the generator 15 due to the too high wind speed is avoided, the service lives of the generator 15 and the speed changing gear box 14 are prolonged, when the wind speed is too high, the variable pitch head 2 contacts with the sleeve cover 6 and rotates mutually, the variable pitch head 2 is protected, after the wind speed becomes small, the transmission plate 8 and the limiting plate 10 are embedded again due to the reset action of the spring 12, at the moment, the hollow cylinder 9 rotates again, the generator 15 generates electricity, the right end of the limiting plate 10 is in a right-side concave arc shape, the right end of the limiting plate 10 is narrow and wide in right, the transmission plate 8 can easily enter a gap of the limiting plate 10 under the rotating condition, the steel balls 11 are in contact with the transmission shaft 4, friction energy is maximally reduced, the transmission efficiency of mechanical energy is improved, air flows out after passing through the air inlet pipeline 18, the confluence box 17, the radiating pipe 16, the confluence box 17 and the air outlet pipeline 19, heat of the variable speed gearbox 14 is taken away, and the service life of the variable speed gearbox 14 is prolonged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The overload protection device for the power transmission and transformation equipment of the wind power plant comprises a shell and is characterized in that a pitch head is arranged on the left side of the shell, a plurality of wind wheel blades are uniformly and fixedly connected to the outer side of the pitch head, a transmission shaft is fixedly connected to the right side of the pitch head, a hole is formed in the middle of the left side of the shell, a sleeve is fixedly arranged in the hole, a sleeve cover is sleeved on the left side of the sleeve, the right side of the sleeve cover is connected with the left side of the sleeve through balls, the transmission shaft penetrates through the sleeve and the sleeve cover, a plurality of transmission plates are uniformly and fixedly connected to the outer surface of the right end of the transmission shaft, the left end of the transmission plate is in a left-side protruding arc shape, a hollow cylinder body is in a left-side opening shape, a plurality of limit plates are uniformly and fixedly connected to the left side of the inner wall of the hollow cylinder, the right end of the limit plates is in a right-side recessed arc shape, steel balls are connected with the right end of the right side of the limit plates in a narrow left-side wide shape, the steel balls are connected with the hollow cylinder through springs, a gear box is arranged on the right side of the hollow cylinder, the gear box is fixedly connected with the right end of the gear box, the gear box is fixedly connected with the right side of the gear box, and the gear box is fixedly connected with the input end of the gear box, and the gear box is fixedly connected with the input;
the number of the wind wheel blades is at least three; the upper side and the lower side of the speed change gear box are respectively fixedly connected with a plurality of radiating pipes, the two ends of each radiating pipe are respectively communicated with a converging box, and the converging boxes on the left side and the right side are respectively communicated with two side wall bodies of the shell through an air inlet pipeline and an air outlet pipeline.
2. The overload protection device for power transmission and transformation equipment of a wind farm according to claim 1, wherein the left side wall of the housing is in a hemispherical shape.
3. The overload protection device for power transmission and transformation equipment of a wind farm according to claim 1, wherein the number of the limiting plates is identical to the number of the transmission plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245184.6A CN108374755B (en) | 2018-03-23 | 2018-03-23 | Overload protection device for power transmission and transformation equipment of wind farm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810245184.6A CN108374755B (en) | 2018-03-23 | 2018-03-23 | Overload protection device for power transmission and transformation equipment of wind farm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108374755A CN108374755A (en) | 2018-08-07 |
| CN108374755B true CN108374755B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810245184.6A Active CN108374755B (en) | 2018-03-23 | 2018-03-23 | Overload protection device for power transmission and transformation equipment of wind farm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108374755B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007105B (en) * | 2019-04-24 | 2021-06-22 | 上海淄德船舶技术有限公司 | Shipborne remote sensing image receiving terminal |
| CN112796933A (en) * | 2020-12-30 | 2021-05-14 | 孟娜妮 | Fan blade rotating device for wind power generation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685694A (en) * | 1995-11-07 | 1997-11-11 | Sundstrand Corporation | Air driven turbine having a blade pitch changing mechanism including overspeed protection |
| FR2822501A1 (en) * | 2001-03-23 | 2002-09-27 | Vergnet | Wind turbine with hydraulic regulation system, uses hydraulic actuators to control angle of radial turbine blades, under control of centrifugal force from a counterweight |
| KR200392170Y1 (en) * | 2005-05-11 | 2005-08-19 | 양진웅 | Bi-directional electric generating system directly coupled to wings of a windmill |
| CN101446270A (en) * | 2008-12-16 | 2009-06-03 | 刘运科 | Wind generator system |
| CN102182638A (en) * | 2011-05-16 | 2011-09-14 | 杨永新 | Wind-pressure paddle change wind driven generator |
| CN203742901U (en) * | 2014-03-13 | 2014-07-30 | 昆明学院 | Minitype wind driven generator capable of adjusting position of wind wheel in wind collecting cover |
| CN204511771U (en) * | 2015-03-25 | 2015-07-29 | 广州红鹰能源科技股份有限公司 | A kind of telescopic type ACTIVE CONTROL wind power generating set |
| CN208010515U (en) * | 2018-03-23 | 2018-10-26 | 国网山西省电力公司忻州供电公司 | A kind of overload safety device of wind power plant power transmission and transforming equipment |
-
2018
- 2018-03-23 CN CN201810245184.6A patent/CN108374755B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685694A (en) * | 1995-11-07 | 1997-11-11 | Sundstrand Corporation | Air driven turbine having a blade pitch changing mechanism including overspeed protection |
| FR2822501A1 (en) * | 2001-03-23 | 2002-09-27 | Vergnet | Wind turbine with hydraulic regulation system, uses hydraulic actuators to control angle of radial turbine blades, under control of centrifugal force from a counterweight |
| KR200392170Y1 (en) * | 2005-05-11 | 2005-08-19 | 양진웅 | Bi-directional electric generating system directly coupled to wings of a windmill |
| CN101446270A (en) * | 2008-12-16 | 2009-06-03 | 刘运科 | Wind generator system |
| CN102182638A (en) * | 2011-05-16 | 2011-09-14 | 杨永新 | Wind-pressure paddle change wind driven generator |
| CN203742901U (en) * | 2014-03-13 | 2014-07-30 | 昆明学院 | Minitype wind driven generator capable of adjusting position of wind wheel in wind collecting cover |
| CN204511771U (en) * | 2015-03-25 | 2015-07-29 | 广州红鹰能源科技股份有限公司 | A kind of telescopic type ACTIVE CONTROL wind power generating set |
| CN208010515U (en) * | 2018-03-23 | 2018-10-26 | 国网山西省电力公司忻州供电公司 | A kind of overload safety device of wind power plant power transmission and transforming equipment |
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| Publication number | Publication date |
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| CN108374755A (en) | 2018-08-07 |
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